METHOD OF CONDUCTING, FIXATION AND RECLAMATION OF MULTIDIRECTIONAL WELL Russian patent published in 2010 - IPC E21B7/06 

FIELD: oil-and-gas production.

SUBSTANCE: method includes drilling of main well up to the latest by depth of branching, fixation of it by pipes, drilling of additional strings with following its fixation by tangs from main string. Main string is at first drilled up to roof cladding of top producing formation with set of zenith angle and it is fixed, then there are deepen of its location in thickness of the most productive stratum with fixation by expanded pipes with located on it if necessary packers, clipping productive stratums from each other and it is implemented its development. Then from main string it is implemented contiguous drilling, fixation and development of additional strings from bottomhole up to roof of top productive stratum with location of bottomhole of additional strings in different productive stratums. Drilled and completed bores are isolated from following additional bore in the process of drilling, fixation and development.

EFFECT: increasing production abilities of well, reduction of temporal, labour and material consumptions for conduction, fixation and development of multidirectional well.

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